Merge pull request #239 from glyptodon/fix-mimetypes

GUAC-1294: Use mimetype text/plain for REST endpoints which return plain strings.

guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/connection/ConnectionRESTService.java

@@ -241,6 +241,7 @@ public class ConnectionRESTService {
      *     If an error occurs while creating the connection.
      */
     @POST
+    @Produces(MediaType.TEXT_PLAIN)
     @AuthProviderRESTExposure
     public String createConnection(@QueryParam("token") String authToken,
             APIConnection connection) throws GuacamoleException {

guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/connectiongroup/ConnectionGroupRESTService.java

@@ -193,6 +193,7 @@ public class ConnectionGroupRESTService {
      *     If an error occurs while creating the connection group.
      */
     @POST
+    @Produces(MediaType.TEXT_PLAIN)
     @AuthProviderRESTExposure
     public String createConnectionGroup(@QueryParam("token") String authToken,
             APIConnectionGroup connectionGroup) throws GuacamoleException {

guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/user/UserRESTService.java

@@ -225,6 +225,7 @@ public class UserRESTService {
      * @return The username of the newly created user.
      */
     @POST
+    @Produces(MediaType.TEXT_PLAIN)
     @AuthProviderRESTExposure
     public String createUser(@QueryParam("token") String authToken, APIUser user) 
             throws GuacamoleException {